5247     }
5248 
5249     {
5250       GCTraceTime(Debug, gc, phases) t("Scrub Symbol Table", _gc_timer_cm);
5251       // Clean up unreferenced symbols in symbol table.
5252       SymbolTable::unlink();
5253     }
5254 
5255     {
5256       GCTraceTime(Debug, gc, phases) t("Scrub String Table", _gc_timer_cm);
5257       // Delete entries for dead interned strings.
5258       StringTable::unlink(&_is_alive_closure);
5259     }
5260   }
5261 
5262   // Restore any preserved marks as a result of mark stack or
5263   // work queue overflow
5264   restore_preserved_marks_if_any();  // done single-threaded for now
5265 
5266   rp->set_enqueuing_is_done(true);
5267   if (rp->processing_is_mt()) {
5268     rp->balance_all_queues();
5269     CMSRefProcTaskExecutor task_executor(*this);
5270     rp->enqueue_discovered_references(&task_executor, &pt);
5271   } else {
5272     rp->enqueue_discovered_references(NULL, &pt);
5273   }
5274   rp->verify_no_references_recorded();
5275   pt.print_enqueue_phase();
5276   assert(!rp->discovery_enabled(), "should have been disabled");
5277 }
5278 
5279 #ifndef PRODUCT
5280 void CMSCollector::check_correct_thread_executing() {
5281   Thread* t = Thread::current();
5282   // Only the VM thread or the CMS thread should be here.
5283   assert(t->is_ConcurrentGC_thread() || t->is_VM_thread(),
5284          "Unexpected thread type");
5285   // If this is the vm thread, the foreground process
5286   // should not be waiting.  Note that _foregroundGCIsActive is
5287   // true while the foreground collector is waiting.
5288   if (_foregroundGCShouldWait) {
5289     // We cannot be the VM thread
5290     assert(t->is_ConcurrentGC_thread(),
5291            "Should be CMS thread");
5292   } else {
5293     // We can be the CMS thread only if we are in a stop-world
5294     // phase of CMS collection.
5295     if (t->is_ConcurrentGC_thread()) {
5296       assert(_collectorState == InitialMarking ||

5247     }
5248 
5249     {
5250       GCTraceTime(Debug, gc, phases) t("Scrub Symbol Table", _gc_timer_cm);
5251       // Clean up unreferenced symbols in symbol table.
5252       SymbolTable::unlink();
5253     }
5254 
5255     {
5256       GCTraceTime(Debug, gc, phases) t("Scrub String Table", _gc_timer_cm);
5257       // Delete entries for dead interned strings.
5258       StringTable::unlink(&_is_alive_closure);
5259     }
5260   }
5261 
5262   // Restore any preserved marks as a result of mark stack or
5263   // work queue overflow
5264   restore_preserved_marks_if_any();  // done single-threaded for now
5265 
5266   rp->set_enqueuing_is_done(true);







5267   rp->verify_no_references_recorded();


5268 }
5269 
5270 #ifndef PRODUCT
5271 void CMSCollector::check_correct_thread_executing() {
5272   Thread* t = Thread::current();
5273   // Only the VM thread or the CMS thread should be here.
5274   assert(t->is_ConcurrentGC_thread() || t->is_VM_thread(),
5275          "Unexpected thread type");
5276   // If this is the vm thread, the foreground process
5277   // should not be waiting.  Note that _foregroundGCIsActive is
5278   // true while the foreground collector is waiting.
5279   if (_foregroundGCShouldWait) {
5280     // We cannot be the VM thread
5281     assert(t->is_ConcurrentGC_thread(),
5282            "Should be CMS thread");
5283   } else {
5284     // We can be the CMS thread only if we are in a stop-world
5285     // phase of CMS collection.
5286     if (t->is_ConcurrentGC_thread()) {
5287       assert(_collectorState == InitialMarking ||